docs: def timestamp(year, month=1, day=1,
                hour=0, minute=0, second=0, microsecond=None,
                off_hours=None, off_minutes=None,
                precision=None, fractional_precision=None):
      """Shorthand for the :class:`Timestamp` constructor.
  
      Specifically, converts ``off_hours`` and ``off_minutes`` parameters to a suitable
      :class:`OffsetTZInfo` instance.
      """
      delta = None
      if off_hours is not None:
          if off_hours < -23 or off_hours > 23:
              raise ValueError('Hour offset %d is out of required range -23..23.' % (off_hours,))
          delta = timedelta(hours=off_hours)
      if off_minutes is not None:
          if off_minutes < -59 or off_minutes > 59:
              raise ValueError('Minute offset %d is out of required range -59..59.' % (off_minutes,))
          minutes_delta = timedelta(minutes=off_minutes)
          if delta is None:
              delta = minutes_delta
          else:
              delta += minutes_delta
  
      tz = None
      if delta is not None:
          tz = OffsetTZInfo(delta)
  
      if microsecond is not None:
          if fractional_precision is None:
              fractional_precision = MICROSECOND_PRECISION
      else:
          microsecond = 0
          if fractional_precision is not None:
              raise ValueError('Cannot have fractional precision without a fractional component.')
  
      return Timestamp(
          year, month, day,
          hour, minute, second, microsecond,
          tz, precision=precision, fractional_precision=fractional_precision
      )